Once you arrive at the airport, please go to 2nd floor and take skywalk toward Yui Rail Naha Airport Station.
It takes 13 mins by train to go to nearest station called Kencho Mae Station.
Price will be ¥260/way and train is operating every 10 minutes (as of 2014)

By Taxi from Naha Airport

There is taxi stand in front of main exit, located on 1st floor,(Arrival lobby is on1st floor)
Approximately, it takes 20 mins to hotel, and it costs about ¥1200~1300 (Depending on traffic)